单项选择题 You delete content from a file named Speed.doc that is stored in the C:\Data folder. You edit 20 files in this folder over the next two days. You need to restore the version of the file that had the correct data. You also need to ensure that the other fiels in the folder remain unaffected. What should you do?（）

单项选择题 You configure Microsoft Internet Explorer 7 with a Really Simple Syndication (RSS) subscription to MSN Entertainment on your computer. Your RSS subscription Web page fails to show the information that the RSS feed Web page displays from MSN Entertainment. You need to ensure that Internet Explorer displays the current content from the RSS feed. What should you do?（）

单项选择题 You implement Parental Controls game restrictions for your child on your computer. You select the TEEN rating game restriction. Your child is still able to run some inappropriate games. You need to prevent access to all inappropriate games. What should you do?（）